Motor using bearing pressing plate

Abstract

The utility model discloses a motor using a bearing pressing plate. The motor comprises a front end cover; one end of the rotor assembly is arranged in a bearing chamber on one side of the front end cover; the stator assembly is sleeved on the rotor assembly, and a wire-embedded stator connecting wire on the stator assembly penetrates out of the wire outlet in the front end cover; the rear end cover is connected with the other end of the rotor assembly and is connected with the stator assembly and the front end cover; the fan is connected to the other end of the rotor assembly; the bearing pressing plate structure is connected to the front end cover and presses a bearing on the rotor assembly; the bearing pressing plate structure comprises a limiting screw connected to the front end cover; the locking screw is connected to the front end cover and is screwed in from the other side of the front end cover to the rotor assembly; one end of the position-adjustable pressing plate is movably connected with the limiting screw and moves along the limiting screw, and the other end of the position-adjustable pressing plate is pulled by the position-adjustable pressing plate to press the bearing; therefore, the technical problems of inconvenient assembly, relatively low repair efficiency and relatively high rejection rate are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of single-phase asynchronous motors for closed water pumps, in particular to a motor using a bearing pressure plate. Background Art

[0002] In single-phase asynchronous motors for water pumps, in order to prevent water vapor from corroding motor parts in a humid environment, thereby causing motor failure, the structure is usually designed as a closed structure;

[0003] The structure of the motor generally includes: a front cover, a bearing pressure piece, a rotor assembly, a stator assembly, a rear cover, a fan, a terminal box, and a rear cover; wherein the bearing pressure piece includes: a bearing pressure plate and a fastening screw;

[0004] During assembly, first install one end of the rotor assembly into the bearing chamber on the front cover, and the bearing on one end of the rotor assembly is inserted into the bearing chamber. Then, the bearing pressure plate is connected to the front cover through the fastening screws. The bearing pressure plate presses the bearing and tightens the bearing to prevent the rotor assembly from moving. Then, the embedded stator connecting wire on the stator assembly is passed through the outlet on the front cover, and then the sealing ring, rear cover, fan, rear cover and other parts are installed. Then, the junction box and its internal parts are installed, and the embedded stator connecting wire is connected to the junction box.

[0005] Such a structure has at least the following disadvantages:

[0006] 1. Due to the limited space inside the front cover, after the rotor assembly and the bearing pressing parts are installed, the limited space is occupied, which will affect the assembly of the embedded stator connection line, cause collision interference, and make the assembly of the rotor assembly and the stator assembly inconvenient;

[0007] 2. After the fan is pressed into assembly, the entire structure of the motor is in a closed and locked state. If a fault occurs, the fan must be removed first before the rear cover, stator assembly, rotor assembly and other components can be removed. During disassembly, parts are easily damaged, the repair efficiency is low, and the scrap rate is high. Utility Model Content

[0008] In view of the above-mentioned deficiencies existing in the related art, an object is to provide a motor using a bearing pressure plate to solve the technical problems of inconvenient assembly, relatively low rework efficiency and relatively high scrap rate in the related art.

[0009] The technical solution to achieve the purpose is: a motor using a bearing pressure plate, comprising: a front cover; a rotor assembly, one end of which is installed in a bearing chamber on one side of the front cover; a stator assembly, which is sleeved on the rotor assembly, and the embedded stator connection line on the stator assembly passes through the outlet on the front cover; a rear cover, which is connected to the other end of the rotor assembly and connects the stator assembly and the front cover; and a fan, which is connected to the other end of the rotor assembly, arranged outside the rear cover, and spaced from the rear cover; and also includes:

[0010] A bearing pressure plate structure, connected to the front end cover, for pressing the bearing on the rotor assembly;

[0011] The bearing pressure plate structure includes: a limit screw connected to the front end cover and spaced apart from the bearing chamber; a locking screw connected to the front end cover, screwed into the rotor assembly from the other side of the front end cover and spaced apart from the limit screw; and an adjustable pressure plate, one end of which is movably connected to the limit screw and moves along the limit screw, and the other end is pulled by the adjustable pressure plate to press the bearing.

[0012] Further: after the locking screw is screwed in, one end passes through the bearing chamber and is connected to the adjustable pressure plate.

[0013] Further: the adjustable pressure plate comprises: a suspension arm, one end of which is provided with a waist-shaped through slot, the waist-shaped through slot is suspended on the limit screw, is movably connected with the limit screw, and moves along the limit screw;

[0014] A contact clamping end, connected to the suspension arm and connected to the locking screw, and used for contacting the outer ring side wall of the bearing during clamping;

[0015] And two positioning claws are connected to the contact and clamping end at intervals and are used to fit with the outer edge of the bearing chamber.

[0016] Further: the suspension arm includes: a first plate body, having the waist-shaped through groove; a first bending corner, connected to the end of the first plate body; a second plate body, connected to the first bending corner; and a second bending corner, connected to the end of the second plate body, connected to the contact clamping end.

[0017] Furthermore: the first plate body, the first bending corner, the second plate body and the second bending corner have the same width;

[0018] The first plate body and the second plate body are arranged vertically.

[0019] Further: the contact clamping end includes: a third plate body, one end of which is connected to the second bending corner; and a fourth plate body, connected to the other end of the third plate body, for contacting the outer ring side wall of the bearing, and the fourth plate body and the third plate body have threaded through holes, and the threaded through holes are threadedly connected to the locking screw.

[0020] Furthermore: the width of the third plate is equal to the width of the second bending corner;

[0021] The fourth plate body is a fan-shaped plate structure, and its width is greater than that of the third plate body;

[0022] The thickness of the fourth plate body is equal to the thickness of the third plate body.

[0023] Furthermore: the third plate body and the fourth plate body are arranged parallel to the first plate body and perpendicular to the second plate body.

[0024] Further: the positioning claws are symmetrically arranged on the contact and clamping end, and are spaced apart from the suspension arm.

[0025] Further: the locking claw includes: a third bending corner connected to the fourth plate body; and a fifth plate body connected to the third bending corner, and the fifth plate body is vertically arranged to the contact and clamping end.

[0026] The above technical solution has the following beneficial effects: a motor using a bearing pressure plate, compared with the related art, is provided with a front cover, a rotor assembly, a stator assembly, a rear cover, a fan and a bearing pressure plate structure; the bearing pressure plate structure is connected to the front cover and is used to press the bearing on the rotor assembly;

[0027] The bearing pressure plate structure includes: a limit screw, a locking screw and an adjustable pressure plate; the limit screw is connected to the front cover, one end of the adjustable pressure plate is movably connected to the limit screw, and moves along the limit screw, and the other end is pulled by the adjustable pressure plate to press the bearing; during assembly, the adjustable pressure plate can move along the limit screw to achieve position adjustment, the assembly flexibility is good, the assembly is relatively convenient, the adjustable pressure plate can be pulled, tightened or loosened by the locking screw, and during disassembly, the adjustable pressure plate is loosened, and the adjustable pressure plate loosens the rotor assembly, the disassembly is relatively convenient, the scrap rate of disassembly is reduced, and the rework efficiency is relatively high; thereby overcoming the technical problems of inconvenient assembly, relatively low rework efficiency, and relatively high scrap rate, and achieving the technical effect of relatively convenient assembly, relatively high rework efficiency, and relatively low scrap rate, which is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the exploded view of the general assembly;

[0029] Figure 2 It is a schematic diagram of the structure after the front end cover, rotor assembly, stator assembly and bearing pressure plate structure are assembled;

[0030] Figure 3 for Figure 2 A partial cross-sectional view of

[0031] Figure 4 It is a schematic diagram of the structure after the front end cover and the bearing pressure plate structure are assembled;

[0032] Figure 5 It is a structural schematic diagram of an adjustable pressure plate;

[0033] Figure 6 It is a structural schematic diagram of a front end cover, a rotor assembly and a bearing pressing piece in the prior art;

[0034] In the figure: 10. bearing pressure plate structure, 11. limit screw, 12. locking screw, 13. adjustable pressure plate, 13-1. suspension arm, 13-11. waist-shaped through groove, 13-12. first plate, 13-13. first bending corner, 13-14. second plate, 13-15. second bending corner, 13-2. contact pressing end, 13-21. third plate, 13-22. fourth plate, 13 -23. Threaded through hole, 13-3. Positioning claw, 13-31. Third bending corner, 13-32. Fifth plate, 100. Front end cover, 101. Bearing chamber, 102. Wire outlet, 200. Rotor assembly, 201. Bearing, 300. Stator assembly, 301. Embedded stator connecting wire, 400. Rear end cover, 500. Fan, 600. Rear cover, 700. Junction box, 800. Bearing pressing piece. DETAILED DESCRIPTION

[0035] In order to make the content easier to understand, the following is a further detailed description based on specific embodiments and in conjunction with the accompanying drawings;

[0036] A motor using a bearing pressure plate solves the technical problems of inconvenient assembly, relatively low repair efficiency and relatively high scrap rate in the related technology, can be manufactured and used, and achieves the positive effects of relatively convenient assembly, relatively high repair efficiency and relatively low scrap rate. The overall idea is as follows:

[0037] One implementation method:

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown; a motor using a bearing pressure plate, comprising: a front cover 100; a rotor assembly 200, one end of the rotor assembly 200 is installed in a bearing chamber 101 on one side of the front cover 100; a stator assembly 300, which is sleeved on the rotor assembly 200, and the embedded stator connection line 301 on the stator assembly 300 passes through the outlet 102 on the front cover 100; a rear cover 400, which is connected to the other end of the rotor assembly 200, and the stator assembly 300 and the front cover 100 are connected by bolts; and a fan 500, which is connected to the other end of the rotor assembly 200, is arranged outside the rear cover 400, and is spaced apart from the rear cover 400; and also includes:

[0039] A bearing pressure plate structure 10, connected to the front end cover 100, for pressing the bearing 201 on the rotor assembly 200;

[0040] The bearing pressure plate structure 10 includes: a limit screw 11, connected to the front cover 100, and spaced apart from the bearing chamber 101; a locking screw 12, connected to the front cover 100, screwed into the rotor assembly 200 from the other side of the front cover 100, and spaced apart from the limit screw 11; and an adjustable pressure plate 13, one end of which is movably connected to the limit screw 11, moves along the limit screw 11, and the other end is pulled by the adjustable pressure plate 13 to press the bearing 201;

[0041] Specifically, during implementation, a front cover 100, a rotor assembly 200, a stator assembly 300, a rear cover 400, a fan 500 and a bearing pressure plate structure 10 are provided; the bearing pressure plate structure 10 is connected to the front cover 100 and is used to press the bearing 201 on the rotor assembly 200; the bearing pressure plate structure 10 includes: a limit screw 11, a locking screw 12 and an adjustable pressure plate 13; during assembly, the adjustable pressure plate 13 can move along the limit screw 11 to achieve position adjustment, and the assembly flexibility is good and the assembly is relatively convenient;

[0042] The adjustable pressure plate 13 can be pulled, tightened or loosened by the locking screw 12. When pulled, tightened, the adjustable pressure plate 13 presses the bearing 201.

[0043] During disassembly, the adjustable pressure plate 13 is loosened by the locking screw 12, and the adjustable pressure plate 13 loosens the rotor assembly 200, which makes disassembly relatively convenient, reduces the scrap rate of disassembly, and has a relatively high repair efficiency;

[0044] Another embodiment:

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown; when implemented, the limit screw 11 can be a hexagon socket screw with a semicircular head, which is threadedly connected to the front cover 100 to limit one end of the adjustable pressure plate 13, and the adjustable pressure plate 13 can move along the limit screw 11 through the waist-shaped through groove 13-11 (such as Figure 3 As shown, the adjustable pressing plate 13 is moved in the left-right direction and the up-down direction), and the position adjustment is realized, the assembly flexibility is good, and the assembly is relatively convenient;

[0046] The locking screw 12 can be a hexagon socket screw with a semicircular head. One end of the locking screw 12 passes through the bearing chamber 101 and is threadedly connected to the threaded through hole 13-23 to connect the adjustable pressure plate 13, so that the adjustable pressure plate 13 can be tightened or loosened by pulling the locking screw 12. Since the locking screw 12 is screwed into the rotor assembly 200 through the outside of the front end cover 100, during assembly, a tool (such as a screwdriver) is used to rotate the locking screw 12. Compared with the fastening screw on the bearing pressure piece 800 in the prior art that is arranged inside the front end cover 100, the assembly operation is relatively convenient.

[0047] The adjustable pressure plate 13 comprises: a suspension arm 13-1, one end of which is provided with a waist-shaped through groove 13-11, the waist-shaped through groove 13-11 being suspended on the limit screw 11, being movably connected to the limit screw 11, and moving along the limit screw 11; a contact and clamping end 13-2 connected to the suspension arm 13-1 and connected to the locking screw 12, and being used to contact the outer ring side wall of the bearing 201 when clamping; and two positioning claws 13-3, which are spaced apart and connected to the contact and clamping end 13-2, and are used to fit the outer edge of the bearing chamber 101;

[0048] The suspension arm 13-1 includes: a first plate body 13-12, having the waist-shaped through groove 13-11; a first bending corner 13-13, connected to the end of the first plate body 13-12; a second plate body 13-14, connected to the first bending corner 13-13; and a second bending corner 13-15, connected to the end of the second plate body 13-14, connected to the contact pressing end 13-2;

[0049] The contact and clamping end 13-2 includes: a third plate 13-21, one end of which is connected to the second bending corner 13-15; and a fourth plate 13-22, which is connected to the other end of the third plate 13-21 and is used to contact the outer ring side wall of the bearing 201, and the fourth plate 13-22 and the third plate 13-21 have threaded through holes 13-23, and the threaded through holes 13-23 are threadedly connected to the locking screw 12;

[0050] The positioning claw 13-3 is symmetrically arranged on the contact and pressing end 13-2 and is spaced apart from the suspension arm 13-1; the positioning claw 13-3 includes: a third bending corner 13-31 connected to the fourth plate body 13-22; and a fifth plate body 13-32 connected to the third bending corner 13-31;

[0051] The suspension arm 13-1, the contact and pressing end 13-2 and the positioning claw 13-3 are integrally formed, for example, by stamping;

[0052] The width dimensions of the first plate 13-12, the first bending corner 13-13, the second plate 13-14 and the second bending corner 13-15 are equal; the first plate 13-12 and the second plate 13-14 are arranged vertically; the width dimension of the third plate 13-21 is equal to the width dimension of the second bending corner 13-15; the fourth plate 13-22 is a fan-shaped plate structure, and its width dimension is greater than the width dimension of the third plate 13-21; the thickness dimension of the fourth plate 13-22 is equal to the thickness dimension of the third plate 13-21; the third plate 13-21 and the fourth plate 13-2 2, is arranged parallel to the first plate body 13-12, and is arranged perpendicular to the second plate body 13-14; the fifth plate body 13-32 is arranged perpendicular to the contact and clamping end 13-2; the size and position are set so that when the waist-shaped through groove 13-11 is suspended on the limit screw 11, the adjustable pressure plate 13 can move along the limit screw 11, and the positioning claw 13-3 can fit with the outer edge of the bearing chamber 101 to form a positioning, and the contact and clamping end 13-2 contacts with the outer ring side wall of the bearing 201, which is conducive to the contact and clamping end 13-2 pressing the outer ring side wall of the bearing 201 after the locking screw 12 is pulled and tightened, thereby realizing the compression and positioning of the bearing 201;

[0053] During assembly, the adjustable pressure plate 13 is connected to the front end cover 100 through the limit screw 11, and one end of the rotor assembly 200 is connected to the bearing chamber 101 through the bearing 201. The position of the adjustable pressure plate 13 is adjusted so that the positioning claw 13-3 fits with the outer edge of the bearing chamber 101, and the fourth plate body 13-22 on the contact clamping end 13-2 presses the outer ring side wall of the bearing 201. The locking screw 12 is screwed in, and the locking screw 12 is pulled and tightened through the threaded through hole 13-23. The contact clamping end 13-2 clamps and positions the bearing 201. One end of the rotor assembly 200 is positioned, and the assembly flexibility is good and the assembly is relatively convenient. Then, the stator assembly 300 and other parts are assembled.

[0054] During disassembly, the locking screw 12 is loosened, the adjustable pressure plate 13 is loosened, the bearing 201 is loosened, and one end of the rotor assembly 200 is loosened, so there is no need to disassemble the fan 500 (in the structure of the prior art, the fan 500 is connected to the other end of the rotor assembly 200. If one end of the rotor assembly 200 cannot be disassembled, the fan 500 needs to be disassembled from the other end of the rotor assembly 200 first, and then the rear end cover 400, the stator assembly 300, etc. are disassembled). The rotor assembly 200, the stator assembly 300, the rear end cover 400 and the fan 500 are directly removed together, which reduces the damage caused by disassembly, has a relatively high repair efficiency and a relatively low scrap rate;

[0055] Regarding the structure of the front end cover 100, the bearing chamber 101, the outlet 102, the rotor assembly 200, the bearing 201, the stator assembly 300, the embedded stator connection line 301, the rear end cover 400, the fan 500, the rear cover 600, the terminal box 700 and the bearing pressing piece 800:

[0056] See Figure 1 , Figure 6 ; The front end cover 100, the bearing chamber 101, the outlet 102, the rotor assembly 200, the bearing 201, the stator assembly 300, the wire-embedded stator connection line 301, the rear end cover 400, the fan 500, the rear cover 600, the terminal box 700 and the bearing pressing piece 800 are structures in the prior art; they are not the inventive point of the utility model, but are only for better description of the utility model and facilitating understanding of the technical solution of the utility model. After seeing the disclosed content, ordinary technicians in this field can directly and unambiguously know how to set it without paying creative labor or excessive experiments;

[0057] The wire outlet 102 is provided, which is conducive to the insertion of the embedded stator connection wire 301, and can also be used to operate and adjust the adjustable pressure plate 13, and has good flexibility in use;

[0058] The bearing pressing member 800 includes: a bearing pressing plate and a fastening screw; since the bearing pressing plate and the fastening screw are both arranged in the front end cover 100, the fastening screw cannot be loosened during disassembly, and thus one end of the rotor assembly 200 cannot be loosened, and the fan 500 is connected to the other end of the rotor assembly 200. If one end of the rotor assembly 200 cannot be disassembled, the fan 500 needs to be disassembled from the other end of the rotor assembly 200, and then the rear end cover 400, the stator assembly 300 and other parts are disassembled. During disassembly, the parts are easily damaged, the repair efficiency is low, and the scrap rate is high.

[0059] The working principle is as follows: during assembly, the adjustable pressure plate 13 can move along the limit screw 11 to achieve position adjustment, the assembly flexibility is good, and the assembly is relatively convenient. At the same time, the adjustable pressure plate 13 can be pulled, tightened or loosened by the locking screw 12. During disassembly, the adjustable pressure plate 13 is loosened by the locking screw 12, and the adjustable pressure plate 13 loosens the rotor assembly 200. The disassembly is relatively convenient, the scrap rate of disassembly is reduced, and the rework efficiency is relatively high.

[0060] In the description, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicating directions or positional relationships are based on the positional relationships described in the drawings and are only for the convenience of description or simplified description, rather than indicating specific directions that must be possessed; the operation process described in the embodiments is not an absolute usage procedure and corresponding adjustments may be made in actual use;

[0061] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the relevant field; the words "first", "second" and similar words used in the specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not necessarily indicate a quantity limitation, but indicate the existence of at least one, which needs to be determined according to the content of the embodiment;

[0062] The above is only a preferred specific implementation method, but the protection scope is not limited to it. Any technician familiar with this technical field can make equivalent substitutions or changes based on the technical solutions and inventive concepts within the disclosed technical scope, which should be covered by the protection scope.

Claims

1. A motor using a bearing pressure plate, comprising: A front end cover (100); a rotor assembly (200), one end of the rotor assembly (200) being installed in a bearing chamber (101) on one side of the front end cover (100); A stator assembly (300) is sleeved on the rotor assembly (200), and the embedded stator connection wire (301) on the stator assembly (300) passes through the wire outlet (102) on the front cover (100); a rear cover (400) is connected to the other end of the rotor assembly (200) and connects the stator assembly (300) and the front cover (100); and a fan (500) is connected to the other end of the rotor assembly (200), arranged outside the rear cover (400), and spaced apart from the rear cover (400); characterized in that it also includes: A bearing pressure plate structure (10) connected to the front end cover (100) and used to press the bearing (201) on the rotor assembly (200); The bearing pressure plate structure (10) comprises: a limit screw (11), connected to the front end cover (100) and spaced apart from the bearing chamber (101); a locking screw (12), connected to the front end cover (100), screwed into the rotor assembly (200) from the other side of the front end cover (100), and spaced apart from the limit screw (11); and an adjustable pressure plate (13), one end of which is movably connected to the limit screw (11) and moves along the limit screw (11), and the other end of which is pulled by the adjustable pressure plate (13) to press the bearing (201).

2. A motor using a bearing pressure plate according to claim 1, characterized in that: After the locking screw (12) is screwed in, one end thereof passes through the bearing chamber (101) and is connected to the adjustable pressure plate (13).

3. A motor using a bearing pressure plate according to claim 1 or 2, characterized in that: The adjustable pressure plate (13) comprises: a suspension arm (13-1), one end of the suspension arm (13-1) having a waist-shaped through slot (13-11), the waist-shaped through slot (13-11) being suspended on the limit screw (11), being movably connected to the limit screw (11), and moving along the limit screw (11); A contact clamping end (13-2) connected to the suspension arm (13-1) and connected to the locking screw (12) and used for contacting the outer ring side wall of the bearing (201) during clamping; and two locking claws (13-3) connected to the contact and clamping end (13-2) at intervals and used to fit with the outer edge of the bearing chamber (101).

4. A motor using a bearing pressure plate according to claim 3, characterized in that: The suspension arm (13-1) comprises: a first plate body (13-12) having the waist-shaped through groove (13-11); a first bending corner (13-13) connected to the end of the first plate body (13-12); a second plate body (13-14) connected to the first bending corner (13-13); and a second bending corner (13-15) connected to the end of the second plate body (13-14) and connected to the contact pressing end (13-2).

5. A motor using a bearing pressure plate according to claim 4, characterized in that: The first plate body (13-12), the first bending corner (13-13), the second plate body (13-14) and the second bending corner (13-15) have the same width dimensions; The first plate body (13-12) and the second plate body (13-14) are arranged vertically.

6. A motor using a bearing pressure plate according to claim 5, characterized in that: The contact clamping end (13-2) comprises: a third plate body (13-21), one end of which is connected to the second bending corner (13-15); and a fourth plate body (13-22), which is connected to the other end of the third plate body (13-21) and is used to contact the outer ring side wall of the bearing (201), and the fourth plate body (13-22) and the third plate body (13-21) have threaded through holes (13-23), and the threaded through holes (13-23) are threadedly connected to the locking screw (12).

7. The motor using the bearing pressure plate according to claim 6, characterized in that: The width dimension of the third plate body (13-21) is equal to the width dimension of the second bending corner (13-15); The fourth plate body (13-22) is a fan-shaped plate structure, and its width dimension is greater than the width dimension of the third plate body (13-21); The thickness dimension of the fourth plate body (13-22) is equal to the thickness dimension of the third plate body (13-21).

8. The motor using the bearing pressure plate according to claim 7, characterized in that: The third plate body (13-21) and the fourth plate body (13-22) are arranged parallel to the first plate body (13-12), and are arranged perpendicular to the second plate body (13-14).

9. A motor using a bearing pressure plate according to claim 8, characterized in that: The locking claw (13-3) is symmetrically arranged on the contact pressing end (13-2) and is spaced apart from the suspension arm (13-1).

10. The motor using the bearing pressure plate according to claim 9, characterized in that: The locking claw (13-3) comprises: a third bending corner (13-31) connected to the fourth plate body (13-22); and a fifth plate body (13-32) connected to the third bending corner (13-31), the fifth plate body (13-32) being arranged perpendicularly to the contact pressing end (13-2).

Images